Pendent winding and setting watch.



PATENTED DEC 10, 1907,

D. A. LINDGREN. PBNDENT WINDING AND SETTING WATCH.

Arrmonmn FILED MAY 15, 1901.

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DANIEL A. LINDGREN, OF WALTHAM, MASSACHUSETTS.

PENDENT WINDING AND SETTING WATCH.

Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed May 15.1907- Serial N0- 373.710.

To all whom it may concern:

Be it known that I, DANIEL A. LINDGREN, of altham, in the county of MiddleseX and State of Massachusetts, have invented certain new and useful Improvements in Pendent Winding and Setting Watches, oi. which the following is a specification.

This invention relates to stem winding and setting watches, in which the winding and setting mechanisms comprise the usual yoke pivoted to swing upon the crown wheel, which is geared to the wheel engaged with the stem, the said yoke having at one end portion an intermediate winding wheel meshing with the crown wheel, and forming a part of the winding train, and at the opposite end portion, an intermediate setting wheel meshmg with the crown wheel, and forming a part of the setting train, the said intermediate wheels being made operative alternately by swinging movements of the yoke caused by endwise movements of the stem or push pin.

The invention has for its object to provide simple and e'l'licient means for controlling the yoke, and causing its adjustments to correspond with those of the stem, theinvention having particularly in view the maintenance of a yielding pressure of the intermediate setting wheel carried by the yoke, against the wheel of the dial train with which said intermediate wheel is engaged by a movement of the stem to setting position, until the teeth oitsaid wheels are properly intermeshed, the yoke and the intermediate setting wheel carried thereby being then locked in the setting position.

The invention consists in the several improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specificationFigure 1 represents a view of the back side of the case center of a watch and the parts of the watch movement mechanism which embodymy invention, the stem being shown in its winding position. Fig. 2 represents a view of the opposite side of the case center, showing the winding position of the yoke. Fig. 3 represents a view similar to Fig. 1, showing the stem in its setting position. Fig. 4 represents a view similar to Fig. 2, showing the setting adjustment of the yoke. Fig. 5 respresents an enlarged section on line 5-5, Fig. 1.

In the drawings, 12 represents a watch case center, which is here shown with the side portions, such as the back, bezel, etc., removed.

13 represents the usual stem, which is movable endwise in the pendant 14, and is rotatable by means of the head or crown 15 aflixed to the stem.

16 represents the usual gear wheel, with which the stem has a sliding and a rotative engagement, the stem being adapted to retate the wheel 16 when pushed in to its winding position, as shown in Fig. 1, and when pulled out to its setting position, as shown in Fig. 3.

17 represents the usual crown wheel, which is rotatively mounted on the movement plate, and is continuously engaged with the stem-actuated wheel 16.

18 represents the yoke, which is mounted to swing on a boss or stud concentric with the axis of the crown wheel 17.

An intermediate setting wheel 19 and an intermediate winding wheel 20 are carried by the end portions of the yoke '18, said wheels being continuously in engagement with the crown wheel 17, and movable by changes in the position of the yoke, so that the wheel 19 may form a part of the dial train, the wheel 20 being inoperative, as shown in Fig. 4, or so that the wheel 20 may form a part of the winding train, the wheel 19 being inoperative, as shown in Fig. 2.

The mechanism thus far described is common, and well-known, and its illustration and descrlption in detail is, therefore, unnecessary.

In carrying out my invention, 1 provide the devices next described, which cooperate with the stem 13 in controlling and adjusting the yoke 18.

21 represents a lever which is pivoted at 22 to the movement plate, and has an arm 23 adapted to engage the usual push in 24, which bears against the inner end of t e stem 13, and is movable in the hub of the stemcontrolled wheel 16. The lever 21 is also provided with a cam face 25, adapted to engage a pin or stud 26, which is afliXed to the yoke 18, and projects therefrom through a slot 27 in the movement plate, the said pin constituting the bearing on which the intermediate setting wheel 19 turns. The lever 21 is constantly held with a yielding pressure against the push pin 24 by means of a spring 28, which is preferably affixed to the lever, and projects therefrom, its outer portion bearing on a fixed stud 29. The spring is under tension, which tends to force the arm 23 against the .push pin 24, and cause the lever 21 to follow the push pin when the stem is pulled outwardly, the spring acting to throw the lever 21 from the position shown in Fig. 1 to that shown in Fig. 3. When the stem is pushed inwardly, the.- spring yields, and is put under increased tension, the push pin forcing the lever to the position shownin The lever 21 is provided with aspring 280, which is preferably an extension of the spring 28, the springs 28 and #280 being preferably made from a single strip of spring wire, the central portion 281 of which, shown by dotted lines in Fig. 1, is secured rigidly in a slot or groove formed for its reception in the lever 21, as shown in Fig. 5 the end portions projecting, and forming the springs 28 and 280. The s ring 280 is formed to engage the stud 26, anc press the latter against the inner portion of the cam face 25, as shown in Fig. 1, when the yoke is in its winding position, the intermediate winding wheel 20 being thus held in yielding engagement with the member of the winding train with which it meshes, so that when the stem is turned backwardly during the winding operation, the wheel 20 will yield and slip on the accompanying wheel of the: winding train in the usual manner, 'When the stem is pulled outwardly to its setting position, the cam face 25 acts on the stud 26 in such manner as to force the latter inwardly to the position shown in Fig. 3, and thus move the yoke to the position shown in Fig. 4,. the intermediate setting wheel 19 being thus moved to its operative position. The spring 28 exerts a. yielding pressure on the intermediate setting wheel 19 until the teeth of the latter are properly engaged with the teeth of the wheel 31 of the dial train, so that if the crowns of said teeth abut together when the yoke is being shifted to setting position, the yoke and the wheel 19 are permitted by the spring 28 to yield until the teeth properly coincide and intermesh. When the movement of the yoke by the spring 28v to settingpositlon is completed, the pin 26 engages a locking face 35 formed on the lever 21 atv the outer end of the cam face 25., said face being formed to engage the pin in such manner as to. positively lock the yoke and the intermediate setting-wheel; 19- in setting position, so that, the wheel. 19 may be turned in either direction without. affecting its operativeness.

It will be seen fromIthe foregoing that when the stem is pulled outwardly, the spring 28 acting on the lever 21 causes; the cam 'face 25 acting on the pin 26, to force the inwardly, the spring 280 acting on the pin or stud 26, forces the yoke to its winding position, and holds it in said position yieldingly so that the intermediate winding wheel can yield from and slip on the teeth of the accomanying member of the winding train during iiackward rotation of the stem and of the intermediate winding wheel.

I believe myself to be the first to employ a single lever in connection with the pin or stud on the yoke, and a spring carried by said lever to maintain a yielding pressure of the intermediate setting wheel against its companion wheel in the dial train until said wheels are properly engaged, the lever then acting to lock the yoke. in its setting-position. This construction involves the employment of practically two parts, in addition to the yoke and its pin or stud 26, viz., the lever and the springs carried thereby, said springs being, according tothe preferred construction, made in a single piece, as shown. My invention therefore provides a locking action for hands setting, which is more simple and involves fewer parts than any other of which I am aware.

I. claim:

1. A watch comprising a winding and hands-setting mechanism, which includes a push pin or stem, and a swingingyoke carrying anintermediate winding wheel and an intermediate setting; wheel, the yoke having an extended stud on which the intermediate setting wheel rotates, a lever movable in one direction by the stem, and provided with a cam face engaging said stud, and a, locking face adjacent to the cam face, a spring adapted to move the lever in the opposite direction, and to cause a locking engagement between said locking face and stud, and a spring carried by the lever, and adapted to exert a yielding pressure on the yoke and on the intermediate winding wheel when the yoke is in its, Winding position, whereby said winding wheel is permitted to slip; when. rotated backwardly.

2. A watch comprising a winding and hands-setting mechanism, which includes a push pin or stem, and aswinging yoke: carrying an intermediate winding wheel and an intermediate setting wheel, the yoke having an extended stud on which the intermediate setting wheel rotates, a lever movable in one direction by the stem, and provided with a cam face engaging said stud, and a locking face adjacent to the cam face, a spring Which includes a connecting portion rigidly adapted to move the lever in the opposite secured to the lever. 10 direction, and to cause a locking engagement In testimony whereof I have aflixed my between said locking face and stud, and a signature, in presence of two Witnesses.

5 spring carried by the lever, and adapted to DANIEL A. LINDGREN.

exert a yielding pressure on the yoke When Witnesses: the letter is in its Winding position, the said O. F. BROWN,

springs being formed from a single piece ARTHUR H. BROWN. 

